Internal combustion engine



- March 1, 1932. J. HERMANN 1,847,560

INTERNAL COMBUSTION ENGINE Filed Dec. 4, 1929 4 Sheets-Sheet l InventorJofin 2?-Z7Erzrzazm M March 1, 1932. J. F. HERMANN 1,847,560

I INTERNAL COMBUSTION ENGINE Filed Dec. 4, 1929 4 Sheets-Sheet 2Inventor A itorney March 1932- J. F. HERMANN INTERNAL COMBUSTION ENGINEFiled Dec. 4, 1929 4 Sheets-Sheet 3 A iiorney By QM March 1, 1932. I J'F, HERMANN 1,84%,560

INTERNAL COMBUSTION ENGINE Filed Dec. 4, 1929 4 Sheets-Sheet 4 InventorJbiziz jfifiivnann' M B? ,Qmaam A iiorney Patented Mar. 1 1932 JOHN F.Hmmmt on H'AiiAiiA; refiners Apniieation filed I ie'cem ber 4, 1929':serial ir'bi'4iii59.

This invention relates to new and useful improvementsin the art known asinternal combustion engines and more particularly to anove'l engine ofthe radial cylinder type. The-principal ohject of this invention is torovide an engine of suchcon'structi'on asto eliminate the use of fuelintake and' ezihaust ports for each cy' 'linder.

Another" important object of the invention is to ro'vide' a'11ove1controlfor regulating tl'l'emixtl'lre of air'and gas. h

After referringto the foll'owingspe'cification and claims,- otherimportant objects and advantages of-the invention "will readily be:

"' come apparent,

In; the drawings: h i

F-igull represent-s a vertical sectional View through the i'mpro'veaengine;

Figure" 2' represents a ertical" sectional view taken longitudinallythrough the engine and showing" the controlling details thereof.

Fig-urea represents across sectional View, through apes-tithe arallelcylinders.

Figure 4 ieprsentsa horizontal sectional View taken substantially onthe'lin e 4'4 of Figure 2. a

Figure: 5 represents a fragmentary vertical sectional View, through amodified form of the" invention.

F igiire 6 represents a cross sektiohal view of a pair of parallelcyl'inders of the modified engine construction;

Figure 7 represents a fia-ginentary slde elevation of the crank shaftfor the preferie'd form of the invention-.- 7 E Figure 8 is acrosssectional viewthfou'gh the crank shaft; I V i 7 Referring to thedrawings wherein like numerals designatelike parts, it will be'seen thatthe improved engine 'inijlud'e's a housing 5', from which radiates thedu'al cylinder con struction" 6; As is clearly'shown' in Figure 3, eachdnal cylinder cohstrnction consists of a block bored for two cylinders7-7. Bet'ween the cylinder'bores'ifs a partition 8 and r atth'e'uppenportion' of the partition Wall is a pair of ports 99. Eachcylinder is provided with a head having a threaded opening 11 thereinfor receiving the spark plug, While circumferentially disposed aroundthe cylinder construction are thecooling fins' lQ A giston13'is0perab1'e Within each-cylinder ore. V s

In Figure 2, thefdrine-s'haft is denoted by the numeral I4 and extendsfrom one side of the crank 15 through-"the bearings 16" and 17. Theopposite'n'c'l of the crank ha' th' pintle l8 projecting therefrom andthrodgh a bearing construction 19 Th'e' bearin'g's 1-6and I9a'1e in thesidew'vall's to of the housing 5,- while thebearing 17' is located atthe outer end of tIiehOIIsing-QO', which projects laterally Henri-hehousing t and coaxiallj with; respect thereto. As is show'n in FignreQ',the d'rii e' shaft H'hasa collarfli thereon this is for interpositionbetween the" bearing: c'ons'trnctionafid"the packing plate 22 whichi'ss'e'clire'dtothonti' "end'of'thehousing QO b'y sfews'aa. I

Mounted pon the housing '20 i's a supercharger 24', the shaft of whichextends down- W "rdlytow rd the driveshaft' 14 and d'e noted by thenumeral '25-: The shaft 25 is operatively connected to the driveshaft-"14 by the beve11et1gars26 @6127; Thesleeves 2'8 and 29- on the'drive shaft space thegearw from the bearingc'onstinction 17 and16'and sothat the same will be Inain'tainedin the roper meshed engagement tviththe gear A condiiit 24; exteii'ds froin th e' supercharger so 245,toconiniiini ca'te with the chahr'llh38, while fuel travels th'roughthe" channel 39? As is clearly shown in Figure 2,: the sectional View istaken through the' master rods 30 which are pivot-any coiin'e'ct'edtdthepistons 13' at their outer end and rigic'llyto the annularmembers 31onithe Clankf 'in 32. The circui'nfere;miiai shoulders? at the.interinediacy of the cranlf pin spaces the annular members 31 a'pait;The'anhnlar mismbersl isprovided at circumferentithy"spa ed inten valswith pairs of apertured ars3 l 34ffoi' receiving the inner en'dso'fonneeting rods'35 of theremaining-pistons. Y

Ag inreferfing toFigure 2;itwili bf'sen that, the sides of the hhiising15o pp5site from the sips-charger 24 i'spr'ovidedf withen enlargedopenin 35', which isto be closed by the-circillar'plate36s A'n' annularrih37 is'provided on theinne'r side of the'platefor engagement withinthe opening 35, to prevent vertical displacement of the plate, whileadditional means may be provided for securing the plates against outwardmovement. A pair of annular passageways 38 and 39 are provided on theouter side of the plate 36. A vertically disposed tubular construction40 is provided with an upper and a lower internal groove way 41 and 42,respectively. The tubular construction 40 at each grooveway has a port43 communicating with the corresponding annular passageways 38 or 39. Acasing 44 of hemi-spherical shape protrudes outwardlyfrom the plate 36and has a shaft 48 journaled horizontally therethrough.

Slidably mounted on the pin 18 is a cam 46, and connecting the cam withthe shaft 48 is a yoke 47. The inclined surface 46 of the cam isdisposed upwardly and the cam is maintained in the position shown inFigure 2, by the tension of the coiled spring 49.

' Vertically slidable within the tubular construction 40 is a valve unit50 which includes a tubular body open at its upper end and closed at itslower end 51. The closed bottom portion 51 is provided with a suitablepacking, while the tubular portion of the valve unit 50 is provided withopenings 52, registerable with the lower port of irrigating opening 43.A leg 53 depends from the closed lower end of the unit 50 and isbifurcated at its lower end to receive the roller 54. A spring 55 servesto draw the valve unit 50 downwardly upon the release of the cam 46, andas noted in Figure 2, the lever 56 is employed for actuating theaforementioned shaft 48. Thus it will be seen that when starting theengine, with the cam 46 in the position shown in Fig. 2, the valve 50will be fully connecting the intake pipe with the gas passageway 39. Theburnt gases of the cylinders are received through the exhaust port 57.The lever 56 may be actuated to actuate the valve 50 to permit air toenter from the passageway 38, to mix with the intake gas. Obviously, byshifting the lever 47, the position of the cam can be adjusted to varyits effect on the valve.

In Figure 5 of the drawings, the modified form of the engine is shownwherein the cylinders 77',- (see Figure 6) of each cylinder block 6 areraised in ofiset relation with respect to the drive shaft.

Thus the width of the engine may be minimized to reduce the spacenecessary in which to mount the same. In this form of the invention, themaster connecting rod is denoted by numeral 30 and connects with thecrank shaft 15 in the manner shown. As is shown in Figure 8, in order tocompensate for the alined relation of the pistons of the form shown inFig. 1, the crank shaft.15 is provided with one crank 16, through whichthe pistons of one radial group are connected,

while the crank pin 17 is offset on the crank shaft in proportion to theoffset relation of the cylinders and to this end are connected thepistons in the cylinders of the other radial group of cylinders. Theangular degree of offset between the pins 16 and 17 is governed by theofiset disposition of the cylinders 7 7. Otherwise the construction ofthe engine, in Figure 5, is the same as the preferred form of theinvention, the sole factor in the modification being the compactness ofconstruction and the novel features of the engine construction necessaryto accomplish this factor.

While the foregoing specification has been in detail, setting forth eachspecific part, it is to be understood that in the manufacture of thisnovel engine construction, various changes in the shape, size andmaterials may be resorted to, without departing from the spirit andscope of the invention as claimed hereinafter.

That is claimed as new is:

1. An internal combustion engine comprising a plurality of radialcylinders, pistons op erable in the cylinders, a crank shaft throughwhich the pistons are connected, a drive shaft, a. supercharger drivenby the drive shaft, an air conduit in communication with thesupercharger, a fuel conduit, a mixing chamber in communication with thesaid conduit, a valve operable in the mixing chamher for regulating themixture of air and gas, and a pipe line communicating the mixing chamberwith the said cylinders, said valve being provided with a dependingmember, a cam for engagement with the depending member, and manual meansfor actuating the cam for shifting the valve to regulate the saidmixture.

2. An internal combustion engine comprising a plurality of radialcylinders, pistons operable in the cylinders, a crank shaft throughwhich the pistons are connected, a drive shaft, a supercharger driven bythe drive shaft, an air conduit in communication with the supercharger,a fuel conduit, a mixing chamber in communication with the said conduit,a valve operable in the mixing chamber for regulating the mixture of airand gas, and a pipe line communicating the mixing chamber with the saidcylinders, said valve being provided with a depending member, a cam forengagement with the depending member, and manual means for actuating thecam for shifting thevalve to regulate the said mixture, and spring meansfor normally maintaining the cam in full communication with the gasconduit. V

In testimony whereof I aflix my signature.

JOHN F'. HER-MANN.

